Chromite Deposits in Pakistan: Mapping High-Grade Zones in Balochistan and Waziristan With Satellites

Muslim Bagh chromite was selling at $340 per ton last time I checked the export numbers. Lump grade, 42% Cr2O3 and above. That's the stuff buyers in China and Turkey actually want, and it's sitting in podiform pockets across Balochistan that nobody has properly mapped since the 1970s GSP surveys.

I think about this a lot. Pakistan exports chromite. We don't process it, we don't smelt it, we just dig it and ship it. And even the digging part is mostly guesswork — pick a hill near a known producing mine, hire 30 laborers, and pray.

Satellites change that math. Not entirely, but enough that you stop drilling blind holes at $80 per meter.

Why chromite is weirdly hard to spot from space

Here's the thing about chromite — it doesn't have a clean spectral fingerprint the way iron oxides or clay alteration do. Chromite itself is dark, almost featureless across visible and shortwave infrared. Stare at a Sentinel-2 image of a chromite-bearing serpentinite and you'll see... rocks. Brown rocks. Maybe slightly different brown rocks.

So we don't hunt the chromite directly. We hunt the host.

Chromite in Pakistan sits inside ophiolite complexes — slabs of ancient ocean floor that got shoved onto the continent. Muslim Bagh ophiolite. Zhob valley ophiolite. Waziristan ophiolite belt. The ultramafic rocks that carry chromite (dunite and harzburgite mostly) have spectral features ASTER can pick up, especially in bands 6, 7, and 8 where Mg-OH absorption shows up. Sentinel-2's band 11 and 12 help too, though with less precision.

Map the serpentinized ultramafics first. Then narrow down to the dunite pods inside them. Then look for structural intersections. That's where podiform chromite likes to sit.

What we actually did in Muslim Bagh

Last year I ran a target generation exercise across roughly 1,840 square kilometers of the Muslim Bagh and Khanozai region. The workflow at geomines wasn't fancy. It was layered.

First layer — ASTER band ratios. Specifically (B6+B8)/B7 to highlight Mg-OH minerals, plus B4/B8 to separate serpentinite from surrounding sediments. This gave us a heat map of probable ultramafic exposure.

Second layer — SRTM DEM at 30m. Podiform chromite bodies in this region tend to weather differently than the host peridotite. They form subtle positive relief because they're harder. Slope analysis and curvature derivatives picked up some of these. Not all. The small pods (under 50m across) get lost at 30m resolution, which is honestly the biggest weakness of free DEM data for this kind of work.

Third layer — Sentinel-1 SAR. We used it for structural mapping. The faults and shear zones that control chromite emplacement show up beautifully in radar after you stack a year of acquisitions and run coherence analysis. Lineament density maps then get overlaid on the ultramafic targets.

Fourth layer — known mine locations from GSP records and informal mining sites visible in high-resolution Google Earth imagery. We used these as training points.

The output was 23 priority targets. Of the 7 that got physically inspected so far, 5 had visible chromite float at surface. One turned out to be a previously unrecorded small pod that a local operator is now trial-mining.

I got the SAR weighting wrong on the first pass, by the way. I'd given it too much importance and ended up with targets clustered along regional faults that had nothing to do with chromite — they were just topographic breaks. Took two iterations to balance it properly.

Waziristan is a different problem

North and South Waziristan host one of the largest ophiolite exposures in Pakistan. Datta Khel, Boya, Shewa — these areas have documented chromite. Some of it high-grade, metallurgical quality.

But you can't just walk in. Security, permissions, logistics — all of it makes ground truthing expensive and slow. Which means satellite work matters more there, not less. You need to be selective about where you eventually send a team.

The Waziristan ophiolite has a different alteration pattern than Muslim Bagh. More listwaenite (carbonate-altered ultramafic) showing up in our spectral analysis, which usually means the chromite-bearing zones got hit by later hydrothermal fluids. Sometimes that concentrates chromite. Sometimes it disperses it. The satellite data tells you where to look — it doesn't tell you what grade you'll find.

For one client looking at a 12 sq km lease near Boya, we narrowed exploration ground from the full lease to about 1.4 sq km of high-priority terrain. That's the value, honestly. Not magic discovery, just smarter focus. Chromite exploration satellite workflows aren't replacing the geologist's hammer — they're telling the geologist which 7% of the lease deserves the hammer first.

What this means for mine owners

Look, if you own a chromite lease in Balochistan or you're thinking of buying one, two practical things.

One — don't pay for a lease based on what the seller claims is "proven reserves" without independent satellite-based verification. I've seen leases marketed for 8 crore that had almost no ultramafic exposure when we mapped them. The seller had photos of one outcrop and a lot of stories.

Two — chromite deposits Pakistan-wide are podiform, which means they're discontinuous. A producing mine 400 meters away tells you almost nothing about your block. Each pod is its own geological accident. Satellite mapping at least narrows where the next accident might be hiding.

The Muslim Bagh field has been mined since the British era and people still find new pods. That should tell you something about how much we don't know yet versus how much is left to find.

If you're sitting on a lease and wondering whether it's worth drilling — what does the ultramafic exposure on your block actually look like from above? Have you ever checked?